Salaah

Q: At the ground where one places his feets during qiyaam, there is less than a dirham najasah and one notices this after salaah? Is the prayer valid?

Q: 

1. Is it permissible to perform Esha salah according to 12 degrees as mentioned in Ahsanul Fatawa and is the salah performed valid?
2. Is it permissible to perform Fajar salah according to 12 or 15 degrees and is the salah performed valid?

Q: Once I was Imam of Esha prayer, my wudhu broke after the second rakat. I did not know what to do, so I completed the namaz. Now what do I do? There were 11 people behind me.

Q: I wanted to ask on behalf of my mum. She reads namaaz and she reads while seated on a chair. She had a back operation and she can't bend down and her back has metal plates put in. Is it allowed that she does namaaz while seated on a chair with the musallah on the floor and performing namaaz with actions?

Q: In namaz when one salaam is done people stop in the middle than do the second salaam. What is the correct way of doing both salaams?

Q: While performing sajdah, if one lifts his feet off the ground, will the Salaah break?

Q: Can a person who does not read his 5 daily salah perform taraweeh salah? This person performs his jumuah salaah.

Q: Can a person who only reads jumuah salaah all year round (no daily salaah besides in Ramadaan where he reads his daily salah and taraweeh):

1. Consider himself a muslim?
2. Perform the taraweeh salah?

Q: One person who has ta'lluq with the salafees told me that making dua with jamaat after salaah is not established. Therefore we shouldn't make it in group. Rather each one should make his dua separately.

Q: I lead the prayers in the Masjid. Many people stand with there children in the first saff. The children are under 9. When I tell them make the children stand at the back they do not listen. What is the Shar'iee hukm? Is it makruh for them to stand in first saff? Are they allowed to stand in second saff or they should stand in last row on the left side? Please give me reference from Hadith so I could explain to them and also if they do not listen how should I advise them?